I have been using a lot of iPods and mp3 players as I travel a lot and the Apple iPod touch 5th Generation is the latest one that I am using and I am getting the best results in the sense of sound clarity and quality. And also till the date no complaints have been shown which gives me a lot of relief.
From my experience I prefer everyone to use the Apple iPod touch 5th Generation so that they get the best musical experience in reasonable price.